Using hidden tab, you can create additional pages for entities, and display them as tabs on entity view page. Optionally the tab can be hidden and made accessible by a secret URI instead. You can place various komponents (such as views) in the layouts (inline twig templates written in Drupal admin UI or using those provided by modules).
While this page is being reviewed can we remove https://www.drupal.org/docs/7/modules/hidden-tab ?
How to create (hidden or visible) custom tabs and pages for entities.
How to charge users credits for accessing the tabs
Develping for hidden tab. Writing adding access control, template, template context, mail discovery plugnis.
Give credit to one user only or limiting komponents to users and komponents.
How to send secret URI of secret tabs and pages regularly by email.
Create extra tabs and pages for entities, accessible via both a secret access link and a regular path.
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